ZN85-40.5 Indoor Auxiliary Handcart switchgear breaker

ZN85-40.5 indoor AC high-voltage Indoor Auxiliary Handcart switchgear breaker is suitable for AC 50Hz. 35kV power system, used as a protection and control device in power plants, substations, etc.,

Product Profile


ZN85 auxiliary handcart designed and produced by us has a screw rod drive mechanism and can be moved easily and avoid damage of thedrive mechanism due to misoperation.It applies to the 50Hz and 40.5kV three-phase alternating-current single-bus segmented power systemsin KYN61-40.5 armored mobile metallic metal-enclosed switchgears.Used with different primary components,it can realize bus connection,electric energy measurement,and overload protection or short-circuit protection for power equipment and,during system overhauls,functionalcomponent and interlocking.

Product standards

ZN85 auxiliary handcart is produced in line with the following standard and code.

GB/T 11022-2011 Common specifications for high-voltage switchgear and controlgear standards

● IEC 62271-2007 High-voltage switchgear and controlgear -Part 1:Common specifications

Operating conditions

Normal operating conditions

● Ambient temperature:-40℃~+40℃(below 35℃ within 24 hours)

● Relative humidity:≤95%(daily average)or ≤90%(monthly average)

● Altitude:≤1000m

Technical parameters

1.1 Technical parameters

   ItemUnitReference value
   Rated voltagekV40.5
Lightning impulse withstand voltagekV185
   Rated insulation level        1min power-frequency withstand voltagekV95
   Rated frequengHz50/60

1.2 Drawing of linkage between the moving contact and the fixed contact

High Voltage Vcb

Overall and Installation dimension

Overall dimension of ZN85-40.5 isolating handcart(cabinet width:1400mm)

High Voltage Vcb
   Rated current(A)6301250
   Fixed contact size D(mm)φ35middle 49
   nterphase distance(mm)300
   Handcart travel(mm)610±2
59For the auxiliary switch in the operating position
58or the auxiliary switch in the operating position
Y1Blocking electromagnet (optional part)


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